Oil distribution system



March 22, 1932. B. l. DAY 1,850,924

' oIL DISTRIBUTION SYSTEM l Filed oct. IT, 1928 .kfa ha Y I f i; k6 v@a h1 fz i 'ya a J k da I I d4 l wi 2 I MMV y 3 da 1\ 1 Y de "e1 'w e C "l Fey-2' A 12T ff ,f 6F34.

Patented Mar. 22, 1932 i lastest' IUNI'frED. STATES "P Aram orme BERNARD INCLEDoN- DAY,

oILfDIs orwLEsfrA wrr'rEnrNo, NEAR oHrcHEsrEE, lAssroNoE 'ro EoLLsEovoE LIMITED, or DEnBnENGLAND s ENGLAND,

Y Application tiled october 17, i928, serial No.` 313,125,- :and in Greatl Eritat'n october 22,1927.`

f 'i' This invention relates to oil'distribution systems in which oil is conveyed to the various bearings or parts to be lubricatedV of a ma# chine, for exam le, an automobile chassis,

g, Jroma point remote from such bearings or parts, throughn suitable conduits.': In such systems' it is 4necessary that the oil shall be supplied under pressure, asfor example, by

a lplunger in an'enclosed vessel containing the oil, and that means be provided to ensure that the required proportion of oilbe delivered to eachof the various bearings or parts to be lubricated. It the resistances -oiered tothe oil through the various branchconduits'are l not properly proportioned, the oil travels by the passage offeringthe least resistance, with i the resultl that some parts are over lubricated and other parts starved of lubrication. Means have beenproposed,' taking the form of obstructions-in the branch conduits, which allow only a small flow o-oil to pass,fso that the general pressure in the system may be main?` tainedl and the oil reach everyV bearing `or part. i v

yDifficulty however hasbeen experienced in such systems in conve ing yoil under pressure to parts beyond a moving joint such as the steering joints'oi the front wheels `of a motor chassis', where an element, called the pivot, is in iixed relation with .thefront' axleand an element called the stub axle yrotates or rocks about s uch pivot. v

In the'case of the joint oi a motor chassis referred to it is necessary to convey the lubri-v cant to many' bearings which are rigid with, and rock wit the stub axle and heretofore this has been effected by providing a chamber or cavity in the upper part of the pivot or Y other member rigid therewith with a resistn ance in the conduit supplying the same as above described such chamber having an outlet on the underside thereof, and a chamber in the stub axle with an inlet or orifice at the u. top-thereof which, in all positions of the stub i axle relative to the pivot or pin, is in register with the said outlet, oil is fed under pressure by a conduit connected to the general system to the iirst said chamber or cavity whence it gravitates into the secondly mentioned charnber and from the latter chamber or cavity gravitates through conduits to the various points to be lubricated and which are rigid with the stub'axle. 'Such'an arrangement'has the objection that the oilftendsito gravitate to lower points while higher points are starved'of oil.V The object or this invention is to enable oil under pressure to be carried beyond a moving oint to the rocking member under pressure, so that it may be forcedA to the various parts 'without relyingv merely on gravitation. l I

According to this-invention a tube mounted on the rotating or'roclringelement, and at its Viixed end in communication with the bearings or parts rigidwith such element toibelubrlcated, is coaxial with and lextends into a tunnel form'edinor on the main body of the machine co-axial' with the axis of rotation of the rotating or rocking member, and to which at ad point beyond the end of the tube there is 79 a supply ofoil under pressure.V The clearance between the tube and the wall of the tunnel is ksuch and the general arrangement or parts such thatthe leakage between the tube and the wall of thetunnel (inseparable from such an arrangement'in the absence of a packing gland) is gauged, and made, to lubricate the bearingof thel rocking member.

The accompanying drawings illustrate an example ofthis invention, as applic joint of a'stub axleor' a motor vehicle and the parts rigid therewith requiring to be lubricated.. Y f

Fig. lisa sectionon'the line 1-1 or Figure 2,` the latter being, a sectional elevation on the line 2-7-2 of Figi. Fig; 3 is a similar view to Fig. '1 but showing 'another formV vo'I' the invention; Figl is a lslightly irregular sectionof'the cover e and pipe g1 taken'inv a plane at right angles to thatoi Figfl. Fig." 5 9C is a section onf line y5f-5 of Figure 2. Both Figuresfland: 5 are drawn twice the scale of Figures Vl, 2 and 3. j s ya is the axle terminating in the eyelet a1, a2 vis a conduit drilled yroma point on the surfaced" ofthe'axle to the interior of the eyeletj, 3 is a connection fixed to the surfacev of theaxlefover the'orificeof they conduit@2 connecting a supply pipe a4.; to such conduit.

b is the stub axle-with an extension b1 to mi d tothe T0 shank and which is bolted the member c comprising the steering arms c1 and c2 to which are respectively bolted the spherical members c3 and c4 being elements of ball and socket joints requiring lubrication. Z is the pivot pin made rigid with the axle by any suitable means and formed with a centra-l hole d1', Z2 is a bearing bush and (Z3 a roller bearing on which the stub axle rotates, and Z4 a nut to secure theinner roller race in place'.

or cover secured by bolts not stub axle b, e1 a socket in the hole d? with a clearance around same, gauged to allow the required amount of oil to pass to the bearing of the stub axle on the pivot.v e2 is a conduit drilled-throughthe member e connectingthe bottom of the pipe e1 to the outside of the member e and secured -to the stub'axle withY is a pipe rigidly mounted in 1 hereinafter referred to and described.v f is the brake drum fixed to the wheel, f1 the cover thereof secured to the stub axle, f2 is a shaft. carrying' the cam f3 which operates the brake shoes.

Oil leaking around, pipe@1 lubricates the lower pivot bearing,while oil can be conveyed from the orifice inthe member e via the union g, the conduit'glf to the connection g2, and thence in three directions firstly by the pipe g3 and the drilled conduits ,g5 andgf tol the surface of Athe spherical -member c? secondly by the pipe g7 andthe drilled conduits gaand glo to thesurfa'ce ofthe spherical memberct, each of thefoutlets from union g2 to pipes g3 and 97 being suitably restricted so as to limit the quantity ofoil passing there through, and thirdly via thev pipe fLrto Vthe connectionv 7L? and lthence Via a restriction within h1 to the roller bearing Z3 and also via the pipe A7b3 tothe restricted connection 71,4 and the drilled holes h5 and'h6 to the bearings of the camshaft f2. Y

Referringto Figure 3. the hole `down, the centre of the pivotV pin 4extends fromI end to end thereof. z' is a tubevrigidly mounted in the cover e3 and extending down the hole the pivot to within a short distance ofthe orifice of thedrilled conduit tthere being for part of vAthe; length. of suc-h tube. avsmall clearance between it andthe said hole so as to enable the lrequired quantity of Aoilto p through such clearance, pass out ofther top of such hele and trickle down to lubricate the roller bearing d while oil under pressure passes. via the' tubez', drilled `conduit* 1, union 2, pipe, 3, union 4, drilled holesc'5 and if" to the bearings of the cam shaft f2. In thearrangement illustrated in Figure 3 the pipe h can be dispensedwith. `Referring toFig. 4 the pipe g1 has sweated to. it a banjo-shaped internally-recessed fitting gn whichis held to the cover e by a set screw. 912 having a hollow a radial hole gli'. v

e is a memberl shown, to theVl member e extending up tfhe" Adescribe ass Referring to Fig. 5 there is an unrestricted connection between pipe g1 and pipe z but the flow to pipes g3 and '97 is restricted by pins j which are made of suliiciently loose fit to permit the required quantity of oil to pass. The `pins are located by means of a small perforated thimble jl vat one end and a small gauze disc jz'held in position bya coil spring '7'3 at the other end. This particular form of restriction is shown'byway of example only and itiis not intendedto/ restrict my invention in this Way.

' It willA be realized that with a paratus as d and with the various ranches of the system in the main body o "the chassis suitably restricted, the oil would be forced under pressureinto ,the hole inthe pivot and down the pipes extending therein so thatit can .be` forced underl pressure to various points rigid with the stubv axle and it isnot necessary to adopt any other means for conveying oilupwards against gravitation` p It will be realized that without departing' from the principleof this invention the'pipe might be secured to the mainrpart ofthe machine, or inthe case of a motor chassis the pivot, and member.

What I claim is :-V A lubricatingvand oil` distributing lsystem for machine parts, comprising a relatively stationary member havingran eye at one end,l a. passage way for the conveyance yofmoil un` der pressure,sad passageway leading to the interior surface of said eyeg a pivot postsecured in said eye and provided with an axial bore andu with a radial port l'establishing a communication between the said passagewa and said bore; a tube theA tunneltformed in the, rocking in said axial bore wit a gaugedclearance around the samefor the passage therethrough of oil; aA A member mounted pivotally onsaid stationarymemf ber,having'a bearing on said pivotfpost lubricated by the oil passing around the tube, and saidpivotally mounted member also having Joint connections thereon, to .which lubricant is lled through said tube.

In testimony whereof I hereto alix my signature. o

BERNARD 1, DAY.A 

